Home / 2,619.92-3,615.39-1,440.92

Finding the Fourth Proportional to 2,619.92, 3,615.39 and 1,440.92

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Solution

The fourth proportional to 2,619.92, 3,615.39 and 1,440.92 is: 1,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.92 : 3,615.39 = 1,440.92 : x
  2. Step 2: Convert to fraction form
    2,619.92/3,615.39 = 1,440.92/x
  3. Step 3: Cross multiply
    2,619.92x = 3,615.39 × 1,440.92
  4. Step 4: Simplify right side
    2,619.92x = 5,209,487.76
  5. Step 5: Solve for x
    x = 5,209,487.76/2,619.92
  6. Step 6: Final answer
    x = 1,988.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.